// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/file_version_info_win.h"

#include <stddef.h>
#include <windows.h>

#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/threading/thread_restrictions.h"
#include "base/win/resource_util.h"

using base::FilePath;

namespace {

struct LanguageAndCodePage {
    WORD language;
    WORD code_page;
};

// Returns the \\VarFileInfo\\Translation value extracted from the
// VS_VERSION_INFO resource in |data|.
LanguageAndCodePage* GetTranslate(const void* data)
{
    //   LanguageAndCodePage* translate = nullptr;
    //   UINT length;
    //   if (::VerQueryValue(data, L"\\VarFileInfo\\Translation",
    //                       reinterpret_cast<void**>(&translate), &length)) {
    //     return translate;
    //   }
    DebugBreak();
    return nullptr;
}

VS_FIXEDFILEINFO* GetVsFixedFileInfo(const void* data)
{
    //   VS_FIXEDFILEINFO* fixed_file_info = nullptr;
    //   UINT length;
    //   if (::VerQueryValue(data, L"\\", reinterpret_cast<void**>(&fixed_file_info),
    //                       &length)) {
    //     return fixed_file_info;
    //   }
    DebugBreak();
    return nullptr;
}

} // namespace

FileVersionInfoWin::~FileVersionInfoWin() = default;

// static
FileVersionInfo* FileVersionInfo::CreateFileVersionInfoForModule(
    HMODULE module)
{
    void* data;
    size_t version_info_length;
    const bool has_version_resource = base::win::GetResourceFromModule(
        module, VS_VERSION_INFO, RT_VERSION, &data, &version_info_length);
    if (!has_version_resource)
        return nullptr;

    const LanguageAndCodePage* translate = GetTranslate(data);
    if (!translate)
        return nullptr;

    return new FileVersionInfoWin(data, translate->language,
        translate->code_page);
}

// static
FileVersionInfo* FileVersionInfo::CreateFileVersionInfo(
    const FilePath& file_path)
{
    base::ThreadRestrictions::AssertIOAllowed();

    //   DWORD dummy;
    //   const wchar_t* path = file_path.value().c_str();
    //   const DWORD length = ::GetFileVersionInfoSize(path, &dummy);
    //   if (length == 0)
    //     return nullptr;
    //
    //   std::vector<uint8_t> data(length, 0);
    //
    //   if (!::GetFileVersionInfo(path, dummy, length, data.data()))
    //     return nullptr;
    //
    //   const LanguageAndCodePage* translate = GetTranslate(data.data());
    //   if (!translate)
    //     return nullptr;
    //
    //   return new FileVersionInfoWin(std::move(data), translate->language,
    //                                 translate->code_page);
    DebugBreak();
    return nullptr;
}

base::string16 FileVersionInfoWin::company_name()
{
    return GetStringValue(L"CompanyName");
}

base::string16 FileVersionInfoWin::company_short_name()
{
    return GetStringValue(L"CompanyShortName");
}

base::string16 FileVersionInfoWin::internal_name()
{
    return GetStringValue(L"InternalName");
}

base::string16 FileVersionInfoWin::product_name()
{
    return GetStringValue(L"ProductName");
}

base::string16 FileVersionInfoWin::product_short_name()
{
    return GetStringValue(L"ProductShortName");
}

base::string16 FileVersionInfoWin::comments()
{
    return GetStringValue(L"Comments");
}

base::string16 FileVersionInfoWin::legal_copyright()
{
    return GetStringValue(L"LegalCopyright");
}

base::string16 FileVersionInfoWin::product_version()
{
    return GetStringValue(L"ProductVersion");
}

base::string16 FileVersionInfoWin::file_description()
{
    return GetStringValue(L"FileDescription");
}

base::string16 FileVersionInfoWin::legal_trademarks()
{
    return GetStringValue(L"LegalTrademarks");
}

base::string16 FileVersionInfoWin::private_build()
{
    return GetStringValue(L"PrivateBuild");
}

base::string16 FileVersionInfoWin::file_version()
{
    return GetStringValue(L"FileVersion");
}

base::string16 FileVersionInfoWin::original_filename()
{
    return GetStringValue(L"OriginalFilename");
}

base::string16 FileVersionInfoWin::special_build()
{
    return GetStringValue(L"SpecialBuild");
}

base::string16 FileVersionInfoWin::last_change()
{
    return GetStringValue(L"LastChange");
}

bool FileVersionInfoWin::is_official_build()
{
    return (GetStringValue(L"Official Build").compare(L"1") == 0);
}

bool FileVersionInfoWin::GetValue(const wchar_t* name,
    std::wstring* value_str)
{
    //   WORD lang_codepage[8];
    //   size_t i = 0;
    //   // Use the language and codepage from the DLL.
    //   lang_codepage[i++] = language_;
    //   lang_codepage[i++] = code_page_;
    //   // Use the default language and codepage from the DLL.
    //   lang_codepage[i++] = ::GetUserDefaultLangID();
    //   lang_codepage[i++] = code_page_;
    //   // Use the language from the DLL and Latin codepage (most common).
    //   lang_codepage[i++] = language_;
    //   lang_codepage[i++] = 1252;
    //   // Use the default language and Latin codepage (most common).
    //   lang_codepage[i++] = ::GetUserDefaultLangID();
    //   lang_codepage[i++] = 1252;
    //
    //   i = 0;
    //   while (i < arraysize(lang_codepage)) {
    //     wchar_t sub_block[MAX_PATH];
    //     WORD language = lang_codepage[i++];
    //     WORD code_page = lang_codepage[i++];
    //     _snwprintf_s(sub_block, MAX_PATH, MAX_PATH,
    //                  L"\\StringFileInfo\\%04x%04x\\%ls", language, code_page, name);
    //     LPVOID value = NULL;
    //     uint32_t size;
    //     BOOL r = ::VerQueryValue(data_, sub_block, &value, &size);
    //     if (r && value) {
    //       value_str->assign(static_cast<wchar_t*>(value));
    //       return true;
    //     }
    //   }
    DebugBreak();
    return false;
}

std::wstring FileVersionInfoWin::GetStringValue(const wchar_t* name)
{
    std::wstring str;
    if (GetValue(name, &str))
        return str;
    else
        return L"";
}

FileVersionInfoWin::FileVersionInfoWin(std::vector<uint8_t>&& data,
    WORD language,
    WORD code_page)
    : owned_data_(std::move(data))
    , data_(owned_data_.data())
    , language_(language)
    , code_page_(code_page)
    , fixed_file_info_(GetVsFixedFileInfo(data_))
{
    DCHECK(!owned_data_.empty());
}

FileVersionInfoWin::FileVersionInfoWin(void* data,
    WORD language,
    WORD code_page)
    : data_(data)
    , language_(language)
    , code_page_(code_page)
    , fixed_file_info_(GetVsFixedFileInfo(data))
{
    DCHECK(data_);
}
